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Finding the Fourth Proportional to 423,657.78, 635,574.15 and 124,148.13

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Solution

The fourth proportional to 423,657.78, 635,574.15 and 124,148.13 is: 186,247.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,657.78 : 635,574.15 = 124,148.13 : x
  2. Step 2: Convert to fraction form
    423,657.78/635,574.15 = 124,148.13/x
  3. Step 3: Cross multiply
    423,657.78x = 635,574.15 × 124,148.13
  4. Step 4: Simplify right side
    423,657.78x = 78,905,342,198.84
  5. Step 5: Solve for x
    x = 78,905,342,198.84/423,657.78
  6. Step 6: Final answer
    x = 186,247.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.